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High-power continuous-wave directly-diode-pumped fiber Raman lasers

High-power continuous-wave directly-diode-pumped fiber Raman lasers
High-power continuous-wave directly-diode-pumped fiber Raman lasers
We describe novel fiber Raman lasers pumped directly by spectrally combined high power multimode laser diodes at ~975 nm and emitting at ~1019 nm. With a commercial multimode graded-index fiber, we reached 20 W of laser output power with a record slope efficiency of 80%. With an in-house double-clad fiber, the beam quality improved to M2 = 1.9, albeit with lower output power and slope efficiency due to higher fiber loss. We believe this is the first publication of a fiber Raman laser cladding-pumped directly by diodes.
1323-1336
Yao, Tianfu
c9d63490-6362-4b10-a3ed-60372c4247b0
Achar Vasant, Harish
833a8dce-cb98-479c-a78d-f754883ff2fd
Sahu, Jayanta
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Nilsson, Johan
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Yao, Tianfu
c9d63490-6362-4b10-a3ed-60372c4247b0
Achar Vasant, Harish
833a8dce-cb98-479c-a78d-f754883ff2fd
Sahu, Jayanta
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Nilsson, Johan
f41d0948-4ca9-4b93-b44d-680ca0bf157b

Yao, Tianfu, Achar Vasant, Harish, Sahu, Jayanta and Nilsson, Johan (2015) High-power continuous-wave directly-diode-pumped fiber Raman lasers. Applied Sciences, 5 (4), 1323-1336. (doi:10.3390/app5041323).

Record type: Article

Abstract

We describe novel fiber Raman lasers pumped directly by spectrally combined high power multimode laser diodes at ~975 nm and emitting at ~1019 nm. With a commercial multimode graded-index fiber, we reached 20 W of laser output power with a record slope efficiency of 80%. With an in-house double-clad fiber, the beam quality improved to M2 = 1.9, albeit with lower output power and slope efficiency due to higher fiber loss. We believe this is the first publication of a fiber Raman laser cladding-pumped directly by diodes.

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Accepted/In Press date: 13 November 2015
e-pub ahead of print date: 20 November 2015
Published date: 20 November 2015
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 384974
URI: https://eprints.soton.ac.uk/id/eprint/384974
PURE UUID: 8fce929c-2658-4576-b421-4d44d08fa700
ORCID for Johan Nilsson: ORCID iD orcid.org/0000-0003-1691-7959

Catalogue record

Date deposited: 10 Dec 2015 14:29
Last modified: 29 Nov 2018 01:34

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